Surname Wych (Wych 
) , all over the world, is a rare cognomen. The surname Wych is habitual in Isle of Man, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Australia. In absolute terms, this name is the most popular in the United Kingdom, the United States, and Australia. Much less frequently, Wych is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Wych | United Kingdom, Canada, Australia, Poland, United States |
| mary ann wych (b. 1850) |
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| augustus joseph wych (b. 1885) |
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| jim wych Canadian snooker player and sport announcer, CA (b. 1955) |
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| carol wych Peerage person ID=644522 |
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| stephanie wych Peerage person ID=644523 |
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| laurence peter wych Peerage person ID=644520 |
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| hermina arletta fourie van wych Peerage person ID=422335 |
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| david c wych researcher (ORCID 0000-0001-9209-4371) |
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| julie wych researcher (ORCID 0000-0002-0111-083X) |
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| anne wych Peerage person ID=644524 |
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| christopher peter wych Peerage person ID=644521 |
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| john wych English politician of the 14th century |
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| a. van wych Peerage person ID=422334 |
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| timothy wych (born 1985) (b. 1985) |
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| david wych (born 1987) (b. 1987) |
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